/Engine/Source/Runtime/Navmesh/Public/DetourCrowd/DetourPathCorridor.h
If the target is within range, it will be the last corner and have a polygon reference id of zero.
The number of corners returned in the corner buffers. [0 <= value <= `maxCorners_]
int findCorners ( dtReal * cornerVerts, unsigned char * cornerFlags, dtPolyRef * cornerPolys, const int maxCorners, [dtNavMeshQuery](API\Runtime\Navmesh\Detour\dtNavMeshQuery) * navquery, const [dtQueryFilter](API\Runtime\Navmesh\Detour\dtQueryFilter) * filter, dtReal pathOffsetDistance, dtReal earlyReachDistance, bool bAllowEarlyReach )